1 great suggestion that i would think that would boost clan donations.
My Suggestion :D:
It would just be to at least refund or give double back the elixir of the troops you donated (including in the clan castle in war). I've always had the frustration that no one would donate for the war cc or request in the clan chat since in the long term it would be just way too wasting of elixir, especially if you're saving FOR THAT NEXT LVL 5 WIZARD UPGRADE OR THAT LVL 6 DRILL U JUST NEED.
It shouldn't be that stranger to Clash since if you ever played Clash Royale (like me :thumbsup:), you know you get both gold and XP when you donate cards. Why not make CoC the safe and at least refund or give double elixir back? It would make a great addition to the next update I think.:)